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Description: 该软件用于研究周期信号的混沌检测，通过Duffing方程，检测极微弱信号，非常有用。-software for the study of the cycle of chaotic signal detection through Duffing equation, detect very weak signal, very useful.
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Size: 6228 |
Author: 罗维 |
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Description: 利用duffing振子检测微弱信号频率的matlab程序。可以检测与周期策动力频率相差0.03之内的微弱信号频率。信噪比达到-68db-use Duffing oscillator frequency detection of weak signals in Matlab procedures. Can be detected with the cycle driven frequency difference of 0.03 within the weak signal frequency. Signal-to-noise ratio-68db
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Size: 1110 |
Author: 张文 |
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Description: 该软件用于研究周期信号的混沌检测，通过Duffing方程，检测极微弱信号，非常有用。-software for the study of the cycle of chaotic signal detection through Duffing equation, detect very weak signal, very useful.
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Size: 6144 |
Author: 罗维 |
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Description: 利用duffing振子检测微弱信号频率的matlab程序。可以检测与周期策动力频率相差0.03之内的微弱信号频率。信噪比达到-68db-use Duffing oscillator frequency detection of weak signals in Matlab procedures. Can be detected with the cycle driven frequency difference of 0.03 within the weak signal frequency. Signal-to-noise ratio-68db
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Size: 1024 |
Author: 张文 |
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Description: 利用随机共振原理检测弱信号。a_b_f.m为主程序-Use of the principle of stochastic resonance detection of weak signal. a_b_f.m-based procedures
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Size: 3072 |
Author: waiwai |
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Description: 研究了利用混沌相变进行弱信号检测的理论及仿真试验( 对基于)振子初值敏感性检测弱信号的方法分
析后指出，过渡过程会影响检测性能，提出一个猜数游戏，一种改进的弱信号检测方法( 对仿真输入噪声生成和仿真步长选择进行
研究后建立了仿真模型，在典型噪声背景下检测弱正弦信号( 实验结-Studied the use of chaotic phase transitions for weak signal detection theory and simulation test (based on) the sensitivity of oscillator initial value method of weak signal detection analysis pointed out that the transition process will affect the detection performance, make a guess the number of games, an improved weak signal detection methods (for simulation input noise generation and simulation step size selection study established a simulation model, in a typical background noise detection of weak sinusoidal signal (experimental colorectal
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Size: 5120 |
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Description: 杜芬振子相轨图在利用混沌处理机械故障微弱信号应用Duffing相轨-Duffing oscillator with mechanical failure orbit map at a weak signal processing phase Duffing orbit
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Size: 1024 |
Author: 还都 |
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Description: duffing方程的仿真及计算程序，可用于信号的处理机仿真运算，也可进行其它的数学运算。-duffing equation simulation and calculation procedures can be used to signal processor simulation computing, but also for other mathematical operations.
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Size: 25600 |
Author: sdsd |
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Description: ：Duffing振子相变对与参考信号频差较小的周期小信号具有敏感性，对白噪声和与参考信号频差较大的周期干扰信号
具有免疫力。利用语音的准周期性提出了一种基于混沌理论的语音端点检测新算法，讨论了如何利用Duffing振子的间歇混沌
特性来检测语音端点。将含噪语音作为Duffing振子的外部参考信号的摄动，根据系统相图是否改变来检测语音段和噪声段。
通过尺度变换并设计了振子阵列以检测频率范围较大的语音信号。实验结果表明，基于混沌的语音端点检测算法在低信噪比
下明显优于传统的能量语音端点检测法。-Duffing oscillator phase transform is sensitive to small signal that has tiny ~equency difference with the
referential signal，and immunes against random noise and larger interference signal that has larger frequency differ—
ence with the referential signa1．In this paper，a new method is proposed for endpoint detection based on chaotic the—
ory using the qusi—periodical characteristic of speech．How to test speech endpoint using intermittent chaos of Duffing
oscillator is discussed．There we take noisy speech as the perturbation of the referential signal of Duffing oscillators，
and we can test speech segments and noise segments according to phase trajectory．Oscillator array is designed and
connected with scale transform to detect the speech signal whose frequency range is wide． Experiments show that
chaotic method is superior to traditional energy method obviously under low SNR condition for endpoint detection．
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Size: 264192 |
Author: 王华 |
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Description: 基于双耦合Duffing振子的随机相位正弦信号检测
采用双耦合混沌振子阵列实现了随机相位微弱正弦信号的检测，在此基础上，提出了新的检测方法，即利用单个耦合混沌振子，通过临界及周期状态
的变化检测随机相位微弱正弦信号并大致估计信号相位范围，该方法比双耦合混沌振子阵列法简单，更易于实现。-Based on double coupled Duffing oscillators random phase sine signals detected by two coupled chaotic oscillator arrays to achieve a random phase weak sinusoidal signal detection, in this basis, the proposed new detection methods, namely the use of a single coupled chaotic oscillators, through the critical and the cycle random phase state change detection and generally weak sinusoid signal phase estimated the scope of the method than the two-coupled chaotic oscillators array method is simple and more easy to implement.
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Size: 211968 |
Author: 魏新建 |
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Description: duffing方程用于微弱信号检测的matlab程序。包含两种方法，一种是inline，一种是@fan。-duffing equation for weak signal detection matlab program. Contains two methods, one is inline, one is @ fan.
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Size: 1024 |
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Description: duffing混沌阵子系统的matlab仿真图。通过参数选择实现无噪声，白噪声，色噪声条件下的微弱信号检测。-duffing matlab simulation of chaotic time around the system map. Through the parameters to achieve,no noise, white noise, colored noise of the weak signal detection.
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Size: 6144 |
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Description: 正弦信号的duffing检测私募林肯仿真模型，非常之精确，望大家下载！-Detection of sinusoidal signal duffing private Lincoln simulation model, very accurate, hope everyone to download!
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Size: 6144 |
Author: wei |
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Description: Based on the Duffing equation, a Duffing oscillator algorithm (DOA) to improve the signal-to-noise ratio (SNR) was presented. By simulated
and experimental data sets, it was proven that the signal-to-noise ratio (SNR) of the weak signal could be greatly enhanced by this method. Using
signal enhancement by DOA, this method extends the SNR of low concentrations of methylbenzene from 2.662 to 29.90 and the method can be
used for quantitative analysis of methylbenzene, which are lower than detection limit of an analytical system. The Duffing oscillator algorithm
(DOA) might be a promising tool to extend instrumental linear range and to improve the accuracy of trace analysis. The research enlarged the
application scope of Duffing equation to chromatographic signal processing.
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Size: 126976 |
Author: kadir |
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Description: 噪声对基于Duffing方程弱信号检测的影响研究Noise on Duffing equation based on the impact of weak signal detection-Noise on Duffing equation based on the impact of weak signal detection
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Size: 120832 |
Author: heart112 |
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Description: duffing振子在检测微弱信号时通过改变相关参数检测出信号的阈值-Duffing oscillator in detecting weak signal by changing the relevant parameters when the detected signal threshold
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Size: 538624 |
Author: wangying |
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Description: 用matlab对duffing方程进行求解，duffing方程是混沌算法的主要分支之一，具有效果较为良好的微弱信号检测功能。-Duffing equation is solved using matlab Duffing equation is one of the main branches of the chaotic algorithm with a the effect weak signal detection function.
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Size: 308224 |
Author: lwl |
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Description: 基于Duffing振子的微弱正弦信号检测。-The weak sinusoidal signal detection based on Duffing oscillator.
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Size: 453632 |
Author: 才子 |
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Description: Duffing带噪信号频率搜索，包括所有的噪声信号，MATLAB源文件，可以运行，能够进行画图。-Duffing noisy signal frequency search, including all of the noise signal, MATLAB source file, you can run, be able to draw.
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Size: 1874944 |
Author: 苏品毓 |
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Description: 针对强噪声背景中弱信号检测问题，在传统检测方法基础上，提出了基于联合去噪和频率调制的微弱信号检测方法。搭建自相关和小波阈值变换联合去噪系统，极大程度抑制了噪声对检测结果的不利影响。利用频率可调标准信号调制待测信号频率，使得被测信号与检测系统策动力信号的频率差满足检测条件，打破了利用Ｄｕｆｆｉｎｇ 振子检测系统只能检测与系统策动力频率相近信号的限制。(In order to solve the problem of weak signal detection in strong noise background, based on traditional detection methods, puts forward the method of weak signal detection and denoising based on frequency modulation. The self correlation and wavelet threshold transform combined de-noising system can greatly restrain the adverse effect of noise on the detection results. Use adjustable standard signal modulation signal frequency to be measured frequency, the signal detection system and the driving signal frequency difference meet the test conditions, the system can only break detection signal detection and system driving the similar frequency limit by using Duffing oscillator.)
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Size: 1069056 |
Author: 张洋
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